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J - ' Sequoia 680 Chesapeake Dnve Redwood City CA 94063 (415) 364 9,500 FAX(415) 364 9233 <br /> ��F......�.�f�..��� 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510) 986 9673 <br /> Analytical 819 Strkes Avenue Suite 8 Sacramento CA 95834 (9t6) 921 9600 FAX(916)921 0100 <br /> Pacific Environmental Group Client Project 1D 310-040 5A/2859, Stockton <br /> 2025 Gateway Place, Suite 440 <br /> San Jose, CA 95110 <br /> Attention Andrew Lehane Work Order# 9603783 01, 02 Reported Mar 18, 1996 <br /> I <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch# GC031496BTEX17A GC031496BTDC17A G0031496BTEX17A GC031496BTEX17A <br /> Analy Method EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep Method EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst J woo J woo J woo J woo <br /> MS/MSD # 960313903 960313903 960313903 960313903 <br /> Sample Conc N D N D N D N D <br /> Prepared Date 3/14/96 3/14/96 3/14/96 3/14/96 <br /> Analyzed Date 3/14/96 3/14/96 3/14/96 3/14/96 <br /> Instrument I D # GCHP17 GCHP17 GCHP17 GCHP17 <br /> Conc Spiked 10 jug/L 10mg/L 10pg/L 30u9IL <br /> Result 10 10 10 30 <br /> �MS % Recovery 100 100 100 100 <br /> Dup Result 9 6 94 9 3 27 <br /> MSD % Recov 96 94 93 90 <br /> RPD 41 62 73 11 <br /> RPD Limit 0.50 0-50 0-50 0-50 <br /> LCS # BLK031496 BLK031496 BLK031496 BLK031496 <br /> I <br /> Prepared Date 3/14/96 3/14/96 3/14/96 3/14/96 <br /> Analyzed Date 3/14/96 3/14/96 3/14/96 3/14/96 <br /> Instrument 1 D # GCHP17 GCHP17 GCHP17 GCHP17 <br /> Conc Spiked 10pg/L 10Ng/L 10ug/L 30ug/L <br /> LCS Result 10 10 10 30 <br /> LCS % Recov 100 100 100 100 <br /> LCS 70-130 70-130 70-130 70.130 <br /> Control Limits <br /> Please Note <br /> The LCS is a control sample of known, interlerent4ree matrix that is analyzed using the same reagents <br /> QlJOIA ANALYTICAL preparation,and analytical methods employed for the samples The matrix spike is an aliquot of sample <br /> J/J forbfred with known quantities of specific compounds and subjected to the entire analytical procedure if <br /> Vey. the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> {LLQ interference the LCS recovery is to be used to validate the bated <br /> Claudia Hirotsu <br /> Project Manager *'MS=Matrix Spike,MSD=MS Duplicate, RPD=Relative w Difference 9603763 PPp <1> <br /> t <br />